/* 基础样式 */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h1, h2, h3 {
    color: #333;
}

/* 用户信息区域 */
.user-info {
    background: #e8f4fd;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #2196F3;
}

/* 演示区域 */
.demo-section {
    margin-bottom: 30px;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background: #2196F3;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background: #1976D2;
}

.btn-primary {
    background: #4CAF50;
}

.btn-primary:hover {
    background: #45a049;
}

/* 链接样式 */
a {
    color: #2196F3;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 列表样式 */
ul {
    padding-left: 20px;
}

li {
    margin-bottom: 8px;
}

/* 登录表单样式 */
.login-form {
    max-width: 400px;
    margin: 50px auto;
    padding: 30px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.form-group input:focus {
    outline: none;
    border-color: #2196F3;
}

/* 提示信息样式 */
.alert {
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border: 1px solid #ef5350;
}

.alert-success {
    background: #e8f5e8;
    color: #2e7d32;
    border: 1px solid #4caf50;
}

/* 演示账号信息 */
.demo-accounts {
    margin-top: 30px;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 4px;
    border-left: 4px solid #ff9800;
}

.demo-accounts h3 {
    margin-top: 0;
    color: #ff9800;
}

.demo-accounts p {
    margin: 5px 0;
    font-family: monospace;
}